What is expressive power of a language in automate theory is a language Hierarchy

When the theory that the Sun goes around the Earth was replaced with the theory that the Earth goes around the Sun, it was called a paradigm shift.

When the theory that the Sun goes around the Earth was replaced with the theory that the Earth goes around the Sun, it was called a paradigm shift.

When the theory that the Sun goes around the Earth was replaced with the theory that the Earth goes around the Sun, it was called a paradigm shift.

The theory that the earth goes (orbits) around the sun, is a fact, not a theory!